One thing I think about is that it's not "just" death. Traumatic head injury robs people of their personality, ability to work, ability to love, ability to play. I know a woman who stood up straight into the bottom of a cabinet. The blow to her head changed her. She's not very nice anymore, and she doesn't really understand what happened.

Helmets reduce the incidence of traumatic head injury by 80%. I've had enough thumps to the head. *I* won't put myself at risk anymore. Anyone who wants to argue his or her "right" to not protect themselves can go on ahead. You might also try smoking and eating a lot of fries. Me, I'll stick with coffee and working crazy hours. But not traumatic head injury.